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Trigonometric Identities

The value of ...

Question

The value of sec0 $^{\circ}$ = y

If secx and tanx are not defined at some x < 100 $^{\circ}$ , then x + y = __

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Solution

Refer to the table for trigonometric values of specific angles

Sec 0 = 1 sec 90 , tan 90 = not defined

so x + y = 91

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